1/* Copyright (C) 2002 Free Software Foundation. 2 3 Test strlen with various combinations of pointer alignments and lengths to 4 make sure any optimizations in the library are correct. 5 6 Written by Michael Meissner, March 9, 2002. */ 7 8#include <string.h> 9#include <stddef.h> 10 11#ifndef MAX_OFFSET 12#define MAX_OFFSET (sizeof (long long)) 13#endif 14 15#ifndef MAX_TEST 16#define MAX_TEST (8 * sizeof (long long)) 17#endif 18 19#ifndef MAX_EXTRA 20#define MAX_EXTRA (sizeof (long long)) 21#endif 22 23#define MAX_LENGTH (MAX_OFFSET + MAX_TEST + MAX_EXTRA + 1) 24 25static union { 26 char buf[MAX_LENGTH]; 27 long long align_int; 28 long double align_fp; 29} u; 30 31main () 32{ 33 size_t off, len, len2, i; 34 char *p; 35 36 for (off = 0; off < MAX_OFFSET; off++) 37 for (len = 0; len < MAX_TEST; len++) 38 { 39 p = u.buf; 40 for (i = 0; i < off; i++) 41 *p++ = '\0'; 42 43 for (i = 0; i < len; i++) 44 *p++ = 'a'; 45 46 *p++ = '\0'; 47 for (i = 0; i < MAX_EXTRA; i++) 48 *p++ = 'b'; 49 50 p = u.buf + off; 51 len2 = strlen (p); 52 if (len != len2) 53 abort (); 54 } 55 56 exit (0); 57} 58